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Heartworm disease is serious and potentially fatal. It affects dogs, cats, and up to 30 other species of mammals. Heartworm disease has been reported in all 50 states. It is caused by parasitic worms (heartworms) living in the major vessels of the lungs and, occasionally, in the heart. Heartworms are transmitted (as microscopic larvae) through the bite of an infected mosquito. The scientific name for the heartworm parasite is Dirofilaria immitis.

Heartworm disease is a serious and potentially fatal condition that affects dogs, cats, and up to 30 other species of mammals. It is caused by parasitic worms (heartworms) living in the major vessels of the lungs and, occasionally, in the heart. The scientific name for the heartworm parasite is Dirofilaria immitis.

During the birthing and nursing processes, puppies and kittens ingest bacteria that make themselves at home in the intestines. Some of these bacteria are beneficial to the pet, and some are potentially harmful. The beneficial bacteria help digest food, produce energy for the cells lining the digestive tract, and help with immune function. They also help keep the potentially harmful bacteria to a minimum.

Roundworms, hookworms, and tapeworms are extremely common parasites that spend their adult lives in the intestines of pets. There are several ways for cats and kittens to become infected with these intestinal parasites.

Program is a drug that helps control fleas on dogs and cats. Program is available in three formulations: a tablet that is given monthly with food (to dogs and cats), a liquid that is given monthly in food (to cats), and an injectable formulation for administration every 6 months (to cats).